Do VRAs Rely On or Use DNS?
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VRAs do not rely on external DNS services in order to operate and do not accept DNS hostnames.
Zerto best practice recommends configuring VRAs with static IP addresses. Since these appliances are not given specified hostnames during installation, the resolution between VRAs is only done via IP address between sites. If VRAs are installed with DHCP, the IP address given to the VRA on first boot is stored by Zerto Virtual Replication and is the IP address used.